Joh. Helker – Dortmunder Adressbuch 1894
| Given name | Joh. |
|---|---|
| Family name | Helker |
| Occupation | Maurer |
| Address | Harkortstrasse 8 |
| Place | Dortmund |
| GOV identifier | DORUNDJO31RM |
| Book | Dortmunder Adressbuch 1894 |
| page | |
| Year | 1894 |
| Given name | Joh. |
|---|---|
| Family name | Helker |
| Occupation | Maurer |
| Address | Harkortstrasse 8 |
| Place | Dortmund |
| GOV identifier | DORUNDJO31RM |
| Book | Dortmunder Adressbuch 1894 |
| page | |
| Year | 1894 |